Probate problems

My girlfriends mother gave up parental rights when she was a child and she found her mom when she was 20. Her mother had a will and the aunt is trying to say that my girlfriend forged the will and trying to take away the house and everything that was left to her by her mother. Her mother died before she could readopt her. She has court on the 19th of june to find out what is going to happen. She paid to have a bunch of handwritting looked at by a expert and it came back as inconclusive. Is there anyone out there that can help so that she can get what her mother wanted and not let her aunt who just wants to just sell the house for money.